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Microwaves are high-frequency waves that transform at a speed of 2.4 billion times per second, causing high-speed wheel motion of water molecules. The
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Product Introduction
Microwaves are high-frequency waves that transform at a speed of 2.4 billion times per second, causing high-speed wheel motion of water molecules. They rub against each other, generating significant heat and facilitating the drying of materials.
Microwaves are electromagnetic waves with extremely short wavelengths, ranging from 1mm to 1m, and corresponding frequencies between 300GHz and 300MHz. In order to prevent microwave interference with radio communication, broadcasting, and radar, there are four frequency bands internationally designated for microwave heating and drying, namely: L-band, with a frequency of 890-940MHz and a center wavelength of 330mm; S-band, with a frequency of 2400-2500MHz and a center wavelength of 122mm; C-band, with a frequency of 5725-5875MHz and a center wavelength of 52mm; K-band, with a frequency of 22000-22250MHz and a center wavelength of 8mm. Only L-band and S-band are used in household microwave ovens.
Microwaves are obtained by passing direct current or 50Hz alternating current through electric vacuum devices or semiconductor devices, utilizing the special motion of electrons in a magnetic field. This movement can be simply explained as follows: from the perspective of electrical structure, one type of molecule is called an non-polar molecular dielectric, and the other type is called a polar molecular dielectric. In general, they are arranged in an irregular pattern. If they are placed in an alternating electric field, the orientation of the polar molecules in these media also changes with the polarity of the electric field, which is called polarization. The stronger the applied electric field, the stronger the polarization effect. The faster the polarity of the applied electric field changes, the faster the polarization occurs, and the more intense the thermal motion of molecules and the friction between adjacent molecules. In this process, the conversion of electromagnetic energy to thermal energy is completed. When the heated substance is placed in a microwave field, its polar molecules oscillate and rub back and forth at a high frequency of billions of times per second with the microwave frequency, generating enough heat to achieve thermal drying of the material in a very short time.
Magnetrons are used in microwave ovens to convert electrical energy into microwave energy. There are two types of magnetrons: pulse magnetrons and continuous magnetrons. The continuous wave magnetron is used in microwave ovens. The propagation speed of microwaves is close to the speed of light, and they can undergo reflection and refraction during the propagation process. They have three important characteristics related to heating. Microwaves encountering metal objects such as silver, copper, aluminum, etc. will be reflected like visible light in a mirror. Therefore, metal isolated microwaves are commonly used. Metal boxes and waveguides are commonly used in microwave ovens, and the furnace door and observation window are made of metal mesh and tempered glass. Microwaves encountering insulating materials such as glass, plastic, ceramics, mica, etc. will pass through smoothly like light passing through glass. Therefore, commonly used insulation materials are used to make material trays without affecting the heating effect. Microwaves encountering materials containing water or fat can be absorbed in large quantities and converted into heat energy. Microwave ovens utilize this characteristic to heat materials. Is microwave processing of materials good? Is there any scientific basis?
Tunnel styleMicrowave drying equipmentcharacteristic:
1. Uniform and fast drying is the main characteristic of microwave drying. Due to the high penetration ability of microwaves, heating can directly generate heat inside the medium. No matter how complex the shape of the billet is, heating is uniform and fast, which makes the billet dehydrate quickly, demold evenly, deform less, and less prone to cracking.
2. Selective microwave heating is related to the inherent properties of the substance. In a microwave field at a certain frequency, water has a much greater heat absorption capacity than other dry materials due to its greater dielectric loss; At the same time, due to the fact that microwave heating is carried out both inside and outside, the internal moisture can be quickly heated and directly evaporated, allowing the ceramic body to be demolded in a short period of time.
3. High thermal efficiency and sensitive response. Due to the direct source of heat from the interior of the dry material, the loss of heat in the surrounding medium is minimal. In addition, the microwave heating chamber itself does not absorb heat or microwaves, and emits all the heat to act on the body, resulting in high thermal efficiency.
Microwaves are electromagnetic waves with extremely short wavelengths, ranging from 1mm to 1m, and corresponding frequencies between 300GHz and 300MHz. In order to prevent microwave interference with radio communication, broadcasting, and radar, there are four frequency bands internationally designated for microwave heating and drying, namely: L-band, with a frequency of 890-940MHz and a center wavelength of 330mm; S-band, with a frequency of 2400-2500MHz and a center wavelength of 122mm; C-band, with a frequency of 5725-5875MHz and a center wavelength of 52mm; K-band, with a frequency of 22000-22250MHz and a center wavelength of 8mm. Only L-band and S-band are used in household microwave ovens.
Microwaves are obtained by passing direct current or 50Hz alternating current through electric vacuum devices or semiconductor devices, utilizing the special motion of electrons in a magnetic field. This movement can be simply explained as follows: from the perspective of electrical structure, one type of molecule is called an non-polar molecular dielectric, and the other type is called a polar molecular dielectric. In general, they are arranged in an irregular pattern. If they are placed in an alternating electric field, the orientation of the polar molecules in these media also changes with the polarity of the electric field, which is called polarization. The stronger the applied electric field, the stronger the polarization effect. The faster the polarity of the applied electric field changes, the faster the polarization occurs, and the more intense the thermal motion of molecules and the friction between adjacent molecules. In this process, the conversion of electromagnetic energy to thermal energy is completed. When the heated substance is placed in a microwave field, its polar molecules oscillate and rub back and forth at a high frequency of billions of times per second with the microwave frequency, generating enough heat to achieve thermal drying of the material in a very short time.
Magnetrons are used in microwave ovens to convert electrical energy into microwave energy. There are two types of magnetrons: pulse magnetrons and continuous magnetrons. The continuous wave magnetron is used in microwave ovens. The propagation speed of microwaves is close to the speed of light, and they can undergo reflection and refraction during the propagation process. They have three important characteristics related to heating. Microwaves encountering metal objects such as silver, copper, aluminum, etc. will be reflected like visible light in a mirror. Therefore, metal isolated microwaves are commonly used. Metal boxes and waveguides are commonly used in microwave ovens, and the furnace door and observation window are made of metal mesh and tempered glass. Microwaves encountering insulating materials such as glass, plastic, ceramics, mica, etc. will pass through smoothly like light passing through glass. Therefore, commonly used insulation materials are used to make material trays without affecting the heating effect. Microwaves encountering materials containing water or fat can be absorbed in large quantities and converted into heat energy. Microwave ovens utilize this characteristic to heat materials. Is microwave processing of materials good? Is there any scientific basis?
Tunnel styleMicrowave drying equipmentcharacteristic:
1. Uniform and fast drying is the main characteristic of microwave drying. Due to the high penetration ability of microwaves, heating can directly generate heat inside the medium. No matter how complex the shape of the billet is, heating is uniform and fast, which makes the billet dehydrate quickly, demold evenly, deform less, and less prone to cracking.
2. Selective microwave heating is related to the inherent properties of the substance. In a microwave field at a certain frequency, water has a much greater heat absorption capacity than other dry materials due to its greater dielectric loss; At the same time, due to the fact that microwave heating is carried out both inside and outside, the internal moisture can be quickly heated and directly evaporated, allowing the ceramic body to be demolded in a short period of time.
3. High thermal efficiency and sensitive response. Due to the direct source of heat from the interior of the dry material, the loss of heat in the surrounding medium is minimal. In addition, the microwave heating chamber itself does not absorb heat or microwaves, and emits all the heat to act on the body, resulting in high thermal efficiency.
Specification parameters
Tunnel styleMicrowave drying equipmentParameters:
Equipment model: ZY-60HM
Power input: three-phase 380 ± 10% 50Hz;
Output microwave power: 90KW (power adjustable)
Microwave frequency: 2450MHz ± 50MHz
Dehydration efficiency: about 60 kg/hour
Equipment (length x width x height): 14700 x 1265 x 1700mm
Microwave leakage: in accordance with the national GB10436-89 standard ≤ 5mw/cm2
Compliant with GB5226 Electrical Safety Standard
Equipment model: ZY-60HM
Power input: three-phase 380 ± 10% 50Hz;
Output microwave power: 90KW (power adjustable)
Microwave frequency: 2450MHz ± 50MHz
Dehydration efficiency: about 60 kg/hour
Equipment (length x width x height): 14700 x 1265 x 1700mm
Microwave leakage: in accordance with the national GB10436-89 standard ≤ 5mw/cm2
Compliant with GB5226 Electrical Safety Standard
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